CN218647018U - Veneer test fixture - Google Patents

Abstract

The embodiment of the application provides a veneer test fixture, includes: support plate, splint and a plurality of pressure are detained. The carrier plate is provided with a test area; the clamping plate is arranged in the test area of the carrier plate and is detachably connected with the carrier plate; the plurality of pressing buckles are arranged on the carrier plate and distributed around the clamping plate; wherein, the pressing buckle is at least partially positioned on one side of the clamping plate back to the carrier plate and used for fixing the clamping plate. The embodiment of the application can avoid the damage of the upper die element and the support plate caused by the lack of the tested plate between the upper die and the support plate in the transportation and maintenance processes of the single plate test fixture, effectively prolong the service life of the fixture and reduce the cost.

Description

Veneer test fixture

Technical Field

The application relates to the technical field of veneer testing, in particular to a veneer testing clamp.

Background

The single board Test fixture is used for a Functional Test (FT) of a motherboard, and generally includes an upper die and a carrier board. During single-board FT testing, a board to be tested is placed on a carrier plate, an upper die is pressed downwards, and the testing is carried out after the upper die and the carrier plate are fastened. However, the surface of the carrier plate facing the upper mold is uneven, so that the upper mold and the carrier plate are in a buckling state during transportation and maintenance, and the direct buckling of the upper mold and the carrier plate can damage elements such as probes, pressure bars, connectors and the like on the upper mold, thereby causing damage to the elements of the upper mold and the carrier plate and causing loss which is difficult to compensate.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a veneer test fixture, which can avoid the damage of a support plate element caused by the lack of a tested plate between an upper die and a support plate in the transportation and maintenance process of the veneer test fixture, effectively prolong the service life of the fixture and reduce the cost.

A veneer test fixture is presented, comprising: the carrier plate is provided with a region to be detected; the clamping plate is arranged on the area to be tested of the carrier plate and is detachably connected with the carrier plate; the pressing buckles are arranged on the carrier plate and distributed around the clamping plate; wherein, press and detain at least part and be located splint one side of dorsad support plate for fixed splint. The splint can be dismantled with the support plate through pressing to detain to press to detain one side that at least part lies in splint dorsad support plate and play fixed action to splint. The veneer test fixture fixes the clamping plate on the carrier plate under the non-test state, the clamping plate forms a physical barrier between the upper die and the carrier plate, and the elements cannot be damaged due to the lack of the veneer between the upper die and the carrier plate when the upper die and the carrier plate are buckled.

In a possible embodiment, the press buckle comprises a rotating shaft and a pressing sheet, the pressing sheet is fixedly arranged on the rotating shaft, the pressing sheet freely rotates along with the rotating shaft, and at least part of the pressing sheet is positioned on the side, opposite to the carrier plate, of the clamping plate. Adopt rotatory pressure to detain solid fixed splint, simple structure, convenient to use need not just can fix splint labour saving and time saving fast with the help of other instruments.

In a possible embodiment, the carrier has a through hole, the rotating shaft passes through the through hole and is movably connected with the carrier, and the rotating shaft freely rotates in the through hole. The rotary pressing buckle is detachably connected with the support plate through the rotary shaft, and is convenient to replace and maintain.

In a possible embodiment, the pressing buckle is connected with the carrier plate in a sliding manner, and the pressing buckle can slide onto the clamping plate and is used for fixing the clamping plate. Adopt the slip to press and detain solid fixed splint, its simple structure, convenient to use need not just can fix splint fast with the help of other instruments, labour saving and time saving.

In one possible embodiment, a plurality of press studs are arranged at the edge of the test area and outside the edge of the clamping plate. Wherein, a plurality of buttons are arranged symmetrically relative to the central line of the carrier plate. The press buckle is arranged near the outer edge of the clamping plate and can rotate freely, and the distance between the press buckle and the clamping plate is smaller than the press buckle rotating radius, so that the press buckle can be effectively pressed on the clamping plate. The pressing buckles are symmetrically arranged, so that the clamping plates are stressed in multiple directions in a balanced manner, and the stability is better.

In a possible embodiment, the support plate includes a plurality of positioning posts, the clamping plate includes a plurality of positioning holes, when the clamping plate is detachably connected to the support plate, the positioning posts are inserted into the positioning holes, wherein the positioning posts are the same as the positioning holes in number and are in one-to-one correspondence with the positioning holes. Adopt reference column and locating hole matched with swing joint mode can be fast with splint location to the district of awaiting measuring of support plate, do not produce the error, realize accurate counterpoint, assembly efficiency is high.

In one possible embodiment, the splint is an acrylic plate. The splint made of acrylic materials has moderate hardness and cannot damage elements on the upper die and the carrier plate.

In one possible embodiment, the shape of the clamping plate and the carrier plate are both rectangular, and the outer contour of the clamping plate does not exceed the outer contour of the carrier plate after the clamping plate is detachably connected with the carrier plate. The profile of the clamping plate does not exceed the profile of the carrier plate, so that the clamping plate is not easy to knock against an external device between the carrier plate and the upper die, and is not easy to damage.

In a possible embodiment, after the clamping plate is detachably connected with the carrier plate, the long side of the clamping plate is parallel to the long side of the carrier plate, and since the clamping plate and the carrier plate are rectangular, the long side of the clamping plate is parallel to the long side of the carrier plate, and therefore the short side of the clamping plate is also parallel to the short side of the carrier plate. The projected area of splint can be less than the projected area of support plate, and the outside profile of splint is in the outside profile of support plate promptly, convenient transportation to not fragile splint in the transportation.

In one possible embodiment, the surface of the splint is smooth and even. The smooth surface of the clamping plate is small in sliding friction force when being contacted with elements on the upper die and the carrier plate, and the elements are not easy to damage.

In a possible implementation manner, the carrier plate further comprises an upper die, and the upper die is buckled with the carrier plate; wherein, the splint are located between last mould and the support plate. When the single board test fixture is in a transportation or maintenance state, the clamping plate is arranged between the upper die and the support plate before the upper die and the support plate are buckled, so that the damage of elements caused by the direct buckling of the upper die and the support plate is avoided.

Drawings

FIG. 1 is a schematic diagram of an assembly structure of a single board test fixture according to an embodiment of the present disclosure;

fig. 2 is a schematic view illustrating an assembly structure of a clamping plate and a carrier plate according to an embodiment of the present disclosure;

fig. 3 is a schematic cross-sectional view of a press buckle according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have particular orientations, be constructed in particular orientations, and be operated, and thus, are not to be construed as limiting the present application.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, an interference connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Fig. 1 is a schematic view of an assembly structure of a test fixture for a single board 1 according to an embodiment of the present application. Generally, the single board 1 testing jig is used for testing the circuit continuity, the functional circuit performance, the signal quality and the like of the single board 1, the single board 1 testing jig may include an upper die 3 and a carrier board 2, the upper die 3 and the carrier board 2 are assembled in a buckled manner, and the single board 1 is located between the upper die 3 and the carrier board 2 during testing. In an example, the upper die 3 and the carrier plate 2 are connected together through a rotating shaft, the upper die 3 can make a circular motion by using the rotating shaft as a center through the rotation of the rotating shaft, and a track of the circular motion of the upper die 3 can be buckled on the carrier plate 2 or separated from the carrier plate 2 along the track of the circular motion.

The carrier plate 2 comprises a test surface, the test surface is a surface facing the upper die 3, the test surface comprises a test area, and the test area is used for testing circuit conductivity, circuit performance, signal quality and the like of the single plate 1. The upper die 3 comprises various connector interfaces, probes for testing signal quality and a pressing rod for fixing the single plate 1, wherein the various connector interfaces are electrically connected with the connector interfaces on the single plate 1, so that the circuit conductivity and the circuit performance can be tested, and the quality of transmission signals can also be tested. The probe contacts with various terminals on the single board 1 to form electric connection for testing the quality of transmission signals of various terminals. It can be understood that the carrier board 2 also has a corresponding connector interface, and in the case that the tested single board 1 has an off-board connector, the connector interface on the carrier board 2 is connected with the connector interface of the single board 1 to form an electrical connection.

In an example, the upper mold 3 and the carrier plate 2 may have various components such as probes, press bars, connectors, and the like, and may use the test requirements of various types of single boards 1. When the test fixture tests the single board 1, the single board 1 is placed in a test area, and the connector interface, the probe and the like of the upper die 3 are respectively connected with the corresponding interface or device of the single board 1 to be tested, so as to perform corresponding tests. The single board 1 may be a PCB board with various functional circuits including, but not limited to, communication, power conversion, signal processing, and the like. In the process of testing the single board 1, the single board 1 is placed on the carrier plate 2, the upper die 3 and the carrier plate 2 are buckled together, and the pressing rod presses the single board 1 to prevent the single board 1 from displacing in the testing process and influencing the testing result. The probe and the connector are electrically connected with the single board 1 for testing.

When the test fixture for the single board 1 is in a non-test state, if the upper die 3 and the carrier plate 2 are buckled together, devices on the upper die 3 and the carrier plate 2 can collide with each other, so that the upper die 3 and the carrier plate 2 are damaged, and loss which is difficult to compensate is caused.

Fig. 1 and fig. 2 show that fig. 2 is a schematic view of an assembly structure of a clamping plate 4 and a carrier plate 2 according to an embodiment of the present application.

Based on this, the veneer 1 test jig in the embodiment of the present application further includes a clamping plate 4. In the transportation process, a clamping plate 4 can be arranged between the upper die 3 of the test fixture of the veneer 1 and the carrier plate 2 to separate the devices on the upper die 3 and the carrier plate 2, so that the damage caused by direct contact collision between the devices is avoided. In the maintenance process, the device of the upper die 3 can be disassembled in the state that the upper die 3 and the carrier plate 2 are buckled, so that the clamping plate 4 is also placed between the upper die 3 and the carrier plate 2 during maintenance, the device on the upper die 3 and the carrier plate 2 is physically separated, and damage caused by direct contact collision between the devices is avoided.

As shown in fig. 1 and fig. 2, when testing a single board 1 by using a single board 1 testing fixture, firstly placing the single board 1 on a carrier plate 2, then buckling an upper die 3 with the carrier plate 2, and electrically connecting the upper die 3 and the carrier plate 2 with the single board 1 after buckling, it can be understood that connector interfaces on the upper die 3 and the carrier plate 2 are connected with a connector on the single board 1 to form a testing loop; after the test is completed, the upper die 3 is separated from the carrier plate 2, the single plate 1 is taken out, the clamping plate 4 is placed in a test area, and the upper die 3 and the carrier plate 2 are buckled, so that the clamping plate 4 physically separates devices on the upper die 3 and the carrier plate 2, and the devices are prevented from being damaged due to direct contact and collision between the devices.

As shown in fig. 2, the veneer test fixture may further include: the pressing buckles 5 are arranged around the test area of the carrier plate 2, and the clamping plate 4 is detachably connected with the carrier plate 2; the veneer test fixture installs the splint 4 on the carrier plate 2 in a non-test state, which plays a role of replacing the veneer. When the upper die is buckled with the support plate 2, the clamping plate 4 is arranged between the upper die and the support plate 2 as a physical interlayer, so that components of the upper die cannot touch components on the support plate 2, and thus the components such as probes, pressure rods, connectors and the like on the upper die and the support plate 2 can be prevented from being damaged.

In some embodiments, the carrier plate 2 may have a plurality of through holes for mounting the press studs.

The clamping plate 4 and the carrier plate 2 can be fixed by a plurality of pressing buckles 5, and the plurality of pressing buckles 5 can be fixedly arranged on the carrier plate 2 along the outer contour of the clamping plate 4. In some embodiments, a plurality of press studs 5 are mounted on the carrier plate 2 through a plurality of through holes; it should be noted that the number of the plurality of through holes may be equal to or greater than the number of the press studs 5. When the number of the plurality of through holes is larger than the number of the press buttons 5, one press button 5 is detachably mounted in the plurality of through holes. In some embodiments, a plurality of press buttons 5 can also be mounted on the carrier plate by means of bolt fastening.

In some embodiments, the pressing buckles 5 are freely rotatable in the through holes, the pressing buckles 5 are respectively in one-to-one correspondence with the through holes and freely rotatable in the through holes, and the pressing buckles 5 can be rotated onto the upper surface of the clamping plate 4 to apply pressure to the clamping plate 4 for fixing the clamping plate 4. The clamping plate 4 can thus be detachably connected to the carrier plate 2 by means of the press studs 5, and the press studs 5 also act as a fixing for the clamping plate 4, at least partially on the side of the clamping plate 4 facing away from the carrier plate 2.

In some embodiments, the pressing buckle may be pushed instead of rotating, and when the pressing buckle is pushed towards the splint, the pressing buckle 5 may move onto the upper surface of the splint 4, and at this time, the pressing buckle 5 has pressure on the upper surface of the splint 4, and may fix the splint 4 so that the splint 4 does not displace.

Fig. 3 is a schematic cross-sectional view of a press buckle according to an embodiment of the present disclosure. As shown in fig. 3, the press button includes a rotating shaft 8 and an elastic pressing piece 9, the elastic pressing piece 9 is fixed on the rotating shaft 8, and the elastic pressing piece 9 can freely rotate on the rotating shaft 8. The rotating shaft 8 is fixedly arranged on the carrier plate, the elastic pressing sheet 9 rotates to the clamping plate along the circumferential direction of the rotating shaft 8, and the elastic pressing sheet 9 applies elastic pressure to the clamping plate. A plurality of pressing buckles are adopted to apply elastic pressure to the clamping plates respectively, so that the clamping plates can be fixed on the support plate.

In another possible embodiment, the pressing sheet 9 is fixed with the rotating shaft 8, the rotating shaft 8 can freely rotate in the through hole on the carrier plate, the pressing sheet 9 rotates with the rotating shaft 8 to the clamping plate, and the pressing sheet 9 exerts pressure on the clamping plate for fixing the clamping plate. A plurality of pressing buckles can be adopted to respectively apply pressure to the clamping plate, so that the clamping plate can be fixed on the support plate.

In some embodiments, the pressing plate 9 may be an elastic pressing plate, and the pressing plate 9 has elasticity, so that when the pressing plate 9 is rotated onto the clamping plate, the pressing plate 9 applies an elastic force to the clamping plate to fix the clamping plate more firmly.

In the embodiment of the application, in the non-testing state of the board testing jig, the clamping plate 4 is fixed on the carrier board 2, the clamping plate 4 forms a physical barrier between the upper die and the carrier board 2, and when the upper die is buckled with the carrier board 2, the element cannot be damaged due to the lack of the board between the upper die and the carrier board 2.

In a possible embodiment, a plurality of press studs 5 can be provided at the edge of the test area, outside the edge of the clamping plate 4. The press button 5 is arranged near the outer edge of the clamping plate 4, and the distance between the press button 5 and the clamping plate 4 is smaller than the rotating radius of the press button 5, so that the press button 5 can be effectively positioned at least partially on the side of the clamping plate opposite to the carrier plate, namely, pressed on the clamping plate 4.

The plurality of press buttons 5 can be symmetrically arranged relative to the center line of the carrier plate 2. The symmetrical arrangement of the pressing buckles 5 can ensure that the clamping plates 4 are stressed in a plurality of directions in a balanced manner, and the stability is better. In addition, a plurality of pressing buckles 5 can be uniformly arranged at the edge of the clamping plate 4 and can also be non-uniformly arranged, and only the clamping plate 4 can be fixed.

The splint 4 can be made of acrylic material. The splint 4 made of acrylic material has moderate hardness and can not damage the upper die and the elements on the carrier plate 2. In addition, the clamping plate 4 can be made of other materials, and only the condition that the elements are not damaged is met, and the application is not particularly limited.

The shapes of the clamping plate 4 and the carrier plate 2 can be both rectangular, and after the clamping plate 4 is detachably connected with the carrier plate 2, the outer contour of the clamping plate 4 does not exceed the outer contour of the carrier plate 2. Because splint and support plate are the rectangle, the long limit of splint is parallel with the long limit of support plate, therefore the minor face of splint also is parallel with the minor face of support plate. The projected area of splint can be less than the projected area of support plate, and the outside profile of splint is in the outside profile of support plate promptly, convenient transportation to not fragile splint in the transportation. In one example, the long side of the clamping plate 4 is parallel to the long side of the carrier plate 2, and the length of the long side of the clamping plate 4 is smaller than the length of the long side of the carrier plate 2. In addition, the surface of the splint 4 needs to be smooth and flat. The smooth surface of the clamping plate 4 prevents the elements on the upper mold or carrier plate 2 from being damaged by the clamping plate 4.

In a possible embodiment, the carrier plate 2 may further be provided with a plurality of positioning pillars 6; the arrangement mode of the positioning columns 6 on the support plate 2 can be set according to actual conditions, and the number of the positioning columns 6 can also be set according to actual needs. The clamping plate 4 is provided with positioning holes 7 corresponding to the positioning columns 6 in position and number, wherein the positioning columns 6 can respectively penetrate through the positioning holes 7, and the clamping plate 4 and the support plate 2 are detachably connected with the positioning columns 6 through the positioning holes 7. The shape of locating hole 7 is corresponding with the cross-sectional shape of reference column 6 to need to satisfy and to overlap and locate on reference column 6, reference column 6 can be the cylinder, also can be shapes such as square post, and locating hole 7 is corresponding can be circular port, long circular port or quad slit etc.. In the embodiment, the positioning hole 7 on the clamping plate 4 is sleeved on the positioning column 6 on the support plate 2, so that the clamping plate 4 is fixed at the preset position of the support plate 2, and the positions of the clamping plate 4 and the support plate 2 are kept relatively fixed; the clamping plate 4 and the carrier plate 2 do not generate relative displacement due to the influence of external force in the processes of clamp transportation and the like.

The number of the positioning holes 7 can also be greater than the number of the positioning posts 6, but it is necessary that the positioning posts 6 can penetrate through part of the positioning holes 7, so that the clamping plate 4 can be mounted with the carrier plate 2.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A veneer test fixture, comprising:

a carrier plate having a test area;

the clamping plate is arranged in the test area of the carrier plate and is detachably connected with the carrier plate;

the pressing buckles are arranged on the carrier plate and distributed around the clamping plate; the pressing buckle is at least partially positioned on one side of the clamping plate, which is back to the carrier plate, and is used for fixing the clamping plate.

2. The veneer test fixture according to claim 1, wherein said press button comprises a rotating shaft and a pressing sheet, said pressing sheet is fixedly disposed on said rotating shaft, and said pressing sheet freely rotates along with said rotating shaft, and said pressing sheet is at least partially located on a side of said clamping plate facing away from said carrier plate.

3. The veneer test fixture of claim 2, wherein said carrier plate has a through hole, said rotation axis passes through said through hole and is movably connected with said carrier plate, and said rotation axis freely rotates in said through hole.

4. A veneer test fixture according to claim 1, wherein said press studs are slidably connected to said carrier plate, said press studs being slidable onto said clamping plate for securing said clamping plate.

5. The veneer test fixture of claim 1, wherein said plurality of press studs are disposed at an edge of said test area and outside an edge of said clamping plate, wherein said plurality of press studs are symmetrically disposed with respect to a center line of said carrier plate.

6. The veneer test fixture according to claim 1, wherein said carrier plate comprises a plurality of positioning posts, and said clamping plate comprises a plurality of positioning holes, and when said clamping plate is detachably connected to said carrier plate, said plurality of positioning posts are inserted into said plurality of positioning holes, wherein said plurality of positioning posts are the same in number as said plurality of positioning holes and correspond to said plurality of positioning holes one to one.

7. A veneer test jig according to any one of claims 1 to 6, wherein the clamping plates are acrylic plates.

8. A veneer test fixture according to claim 5, wherein after said clamping plate is detachably attached to said carrier plate, the long side of said clamping plate is parallel to the long side of said carrier plate.

9. A veneer test fixture according to any one of claims 1 to 6, wherein the surface of said clamping plate is smooth and even.

10. The veneer test fixture of any one of claims 1 to 6, further comprising an upper die, said upper die being snap-fitted with said carrier plate; wherein, splint are located go up the mould with between the support plate.

Images